Watch Prescaler Control Register (Wpcr); Figure 12.3-1 Watch Prescaler Control Register (Wpcr) - Fujitsu F2MC-8L Series Hardware Manual

CHAPTER 12 WATCH PRESCALER

12.3 Watch Prescaler Control Register (WPCR)

The watch prescaler control register (WPCR) is used to select the interval time, clear
the counter, control interrupts, and to check the watch prescaler status.
Watch Prescaler Control Register (WPCR)
Address
000B
H
R/W : Readable and wrtiable
— : Unused
X : Indeterminate
: Initial value
266

Figure 12.3-1 Watch Prescaler Control Register (WPCR)

Bit 7 Bit 6 Bit5
WIF WIE —
R/W R/W
WCLR
WS1
F
CL
WIE
WIF
Bit 4 Bit 3 Bit 2
— — WS1
R/W
Watch prescaler clear bit
Read
0 —
1 Always returns "1".
WS0 Watch interrupt interval time select bits
0 0
0 1
1 0
1 1
: Subclock oscillation
Interrupt request enable bit
0 Disables interrupt request output.
1 Enables interrupt request output.
Watch interrupt request flag bit
Read
0 No interval interrupt
1 Causes interval interrupt
Bit 1 Bit 0 Initial value
WS0 WCLR 00XXX000
R/W R/W
Write
Clears watch prescaler.
Makes no change, having no
effect on operation.
10
2 /F
CL
2 13 /F
CL
14
2 /F
CL
2 15 /F
CL
Write
Clears this bit.
Makes no change, having no
effect on operation.
B